Heavy blowdown in an exposed seed block in Lincoln County, Oregon. Seed block is the lee side of low ridge to the right. Wind came from the southwest.
Photo by: Carl Bernsten Date: August 19, 1952
Credit: National Archives and Records Administration RG# 95-GP. Records of the Forest Service. General Subject Files. US Forest Service Negative Number: 471407 NARA Image: 95-GP-1300-Box0306_019_001_AC
For additional information see: Greeley, A.W., Wright, K.H. and Pope, R.B. 1953. Final report on the 1952 blowdown bark beetle survey in the Douglas-fir region of Oregon and Washington. USDA Forest Service, Pacific Northwest Forest and Range Experiment Station. Portland Forest Insect Lab.
For related historic program documentation see: archive.org/details/AerialForestInsectAndDiseaseDetection... Johnson, J. 2016. Aerial forest insect and disease detection surveys in Oregon and Washington 1947-2016: The survey. Gen. Tech. Rep. R6-FHP-GTR-0302. Portland, OR: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. 280 p.